Add MetadataEngine and ShortsMetadataEngine classes

src/engines/MetadataEngine/BaseMetadataEngine.py

@@ -0,0 +1,16 @@
+from abc import abstractmethod
+from typing import TypedDict
+
+from .. import BaseEngine
+
+class MetadataEngineSettings(TypedDict):
+    title: str
+    description: str
+
+class BaseMetadataEngine(BaseEngine):
+    def __init__(self, **kwargs) -> None:
+        ...
+
+    @abstractmethod
+    def get_metadata(self, input: str) -> MetadataEngineSettings:
+        ...